The invention relates to a system (100) for visualizing a cardiac parameter at a plurality of positions in a myocardium and at a plurality of stress levels, the system comprising a determination unit (110) for determining a value of the cardiac parameter at a position from the plurality of positions in the myocardium and at a stress level from the plurality of stress levels on the basis of stress level cardiac functional data, and a visualization unit (120) for visualizing the determined value of the cardiac parameter by displaying a point in a viewing plane. The visualized points are defined by their polar coordinates in a polar coordinate system in the viewing plane. A radial coordinate of the point visualizes the determined value of the cardiac parameter. An angular coordinate of the point visualizes an angular coordinate of the position in the myocardium in a cylindrical coordinate system. Thus, the system allows easy numerical comparison of local myocardial contractions at different stress level values.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A system for visualizing a cardiac parameter at a plurality of positions in a myocardium and at a plurality of stress levels, the system comprising: a memory unit which receives and stores stress level cardiac functional data, the stress level cardiac functional data including cylindrical coordinates of positions on an outer surface and on an inner surface of a wall of the myocardium at a plurality of phases of a cardiac cycle and at a plurality of stress levels; a determination unit for determining a value of the cardiac parameter at a position from the plurality of positions in the myocardium and at a stress level from the plurality of stress levels on the basis of stress level cardiac functional data; and a visualization unit for visualizing the determined value of the cardiac parameter by displaying a point in a viewing plane, where in a polar coordinate system in the viewing plane; a radial coordinate of the point visualizes the determined value of the cardiac parameter; and an angular coordinate of the point visualizes an angular coordinate of the position in the myocardium in a cylindrical coordinate system.
A system visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system.
2. The system as claimed in claim 1 , wherein the plurality of positions in the myocardium are included in a slice of the myocardium substantially perpendicular to is cylindrical axis of the cylindrical coordinate system.
The system described in claim 1 visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement.
3. The system as claimed in claim 2 , further including: an indication unit for indicating an angle in the polar coordinate system; and a plot unit for plotting a graph, based on positions from the plurality of positions in the myocardium which have angular coordinates substantially equal to the indicated angle.
The system described in claim 1 visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement. Furthermore, the system lets the user select an angle on the polar coordinate system and plots a graph representing the cardiac parameter values at heart locations with angles equal to the selected angle.
4. The system as claimed in claim 2 , further including an image display unit for displaying the slice of the myocardium at a stress level from the plurality of stress levels.
The system described in claim 1 visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement. The system also shows a visual representation of the selected heart slice at a particular stress level.
5. The system as claimed in claim 1 , further including a computation unit for computing an average of the cardiac parameter over a set of positions from plurality of positions in the myocardium at a stress level from the plurality of stress levels.
The system described in claim 1 visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The system also calculates and displays the average cardiac parameter value across a range of heart locations at a given stress level.
6. An image acquisition apparatus comprising the system claimed in claim 1 .
This claim describes an image acquisition apparatus that incorporates the system described in claim 1, which visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system.
7. A workstation comprising the system as claimed in claim 1 .
This claim describes a workstation that incorporates the system described in claim 1, which visualizes heart function under stress. It receives and stores heart data including cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels. It calculates a cardiac parameter value at a specific heart location and stress level based on this data. The system then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system.
8. A method visualizing a cardiac parameter at a plurality of positions in a myocardium and at a plurality of stress levels, the method comprising: determining a value of the cardiac parameter at a position from the plurality of positions in the myocardium and at a stress level from the plurality of stress levels on the basis of stress level cardiac functional data; and visualizing the determined value of the cardiac parameter by displaying a point in a viewing plane, where in a polar coordinate system in the viewing plane: a radial coordinate of the point visualizes the determined value of the cardiac parameter; and an angular coordinate of the point visualizes an angular coordinate of the position in the myocardium in a cylindrical coordinate system.
A method visualizes heart function under stress. It calculates a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system.
9. The method as claimed in claim 8 , wherein the plurality of positions in the myocardium are included in a slice of the myocardium substantially perpendicular to a cylindrical axis of the cylindrical coordinate system.
The method described in claim 8 visualizes heart function under stress. It calculates a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement.
10. The method as claimed in claim 9 , further including: indicating an angle in the polar coordinate system; and plotting a graph, based on positions from the plurality of positions in the myocardium which have angular coordinates substantially equal to the indicated angle.
The method described in claim 8 visualizes heart function under stress. It calculates a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement. Furthermore, the method includes selecting an angle on the polar coordinate system and plotting a graph representing the cardiac parameter values at heart locations with angles equal to the selected angle.
11. The method as claimed in claim 8 , wherein the stress level cardiac functional data includes cylindrical coordinates of positions en an outer surface and on an inner surface of the myocardium wall at a plurality of phases of a cardiac cycle and at a plurality of stress levels.
The method described in claim 8 visualizes heart function under stress. It calculates a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart data used includes cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels.
12. The method as claimed in claim 8 , further computing an average of the cardiac parameter over a set of positions from the plurality of positions in the myocardium at a stress level from the plurality of stress levels.
The method described in claim 8 visualizes heart function under stress. It calculates a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The method also calculates the average cardiac parameter value across a range of heart locations at a given stress level.
13. The method as claimed in claim 8 , further including: receiving stress level cardiac functional data from at least one of a data storage device and a user input; and storing the stress level cardiac functional data.
The method described in claim 8 visualizes heart function under stress. It calculates a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The method includes receiving the heart function data from a data storage device or user input and storing the data.
14. A non-transitory digital medium carrying a computer program product to be loaded by a computer arrangement, comprising instructions tor visualizing a cardiac parameter at a plurality of positions in a myocardium and at a plurality of stress levels, the computer arrangement comprising a processing unit and a memory, the computer program product, after being loaded, providing said processing unit with a capability to carry out the tasks of: determining a value of the cardiac parameter at a position from the plurality of positions in the myocardium and at a stress level from the plurality of stress levels on the basis of stress level cardiac functional data; and visualizing the determined value of the cardiac parameter by displaying a point in a viewing plane, where in a polar coordinate system in the viewing plane: a radial coordinate of the point visualizes the determined value of the cardiac parameter; and an angular coordinate of the point visualizes an angular coordinate of the position in the myocardium in a cylindrical coordinate system.
A non-transitory digital medium stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system.
15. The non-transitory digital medium carrying a computer program product to he loaded by a computer arrangement as claimed in claim 14 , wherein the plurality of positions in the myocardium are included in a slice of the myocardium substantially perpendicular to a cylindrical axis of the cylindrical coordinate system.
The non-transitory digital medium described in claim 14 stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement.
16. The non-transitory digital medium carrying is computer program product to be loaded by a computer arrangement as claimed in claim 15 , further including instructions to carry out the task of: indicating an angle in the polar coordinate system; and plotting a graph, based on positions from the plurality of positions in the myocardium which have angular coordinates substantially equal to the indicated angle.
The non-transitory digital medium described in claim 14 stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement. Furthermore, it includes instructions to allow selection of an angle on the polar coordinate system and plotting a graph representing the cardiac parameter values at heart locations with angles equal to the selected angle.
17. The non-transitory digital medium carrying a computer program product to be loaded by a computer arrangement as claimed in claim 15 , further including instructions to carry out the task of: displaying the slice of the myocardium at a stress level from the plurality of stress levels on a display unit.
The non-transitory digital medium described in claim 14 stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart locations being visualized are limited to a slice of the heart that is perpendicular to the cylindrical axis used for coordinate measurement. It further includes instructions to display the slice of the myocardium at a specific stress level.
18. The non-transitory digital medium carrying a computer program product to be loaded by a computer arrangement as claimed in claim 14 , further including instructions to carry out the task of: computing an average of the cardiac parameter over a set of positions from the plurality of positions in the myocardium at a stress level from the plurality of stress levels.
The non-transitory digital medium described in claim 14 stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. It also includes instructions to calculate the average cardiac parameter value across a range of heart locations at a given stress level.
19. The non-transitory digital medium carrying a computer program product to be loaded by a computer arrangement as chimed in claim 14 , wherein the stress level cardiac functional data includes cylindrical coordinates of positrons on an outer surface and on an inner surface of the myocardium wall at a plurality of phases of a cardiac cycle and at a plurality of stress levels.
The non-transitory digital medium described in claim 14 stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The heart data used includes cylindrical coordinates of the inner and outer heart wall at different points in the cardiac cycle and at various stress levels.
20. The non-transitory digital medium carrying a computer program product to be loaded by a computer arrangement as claimed in claim 14 , further including: receiving stress level cardiac functional data from at least one of a data storage device and a user input; and storing the stress level cardiac functional data.
The non-transitory digital medium described in claim 14 stores instructions for visualizing heart function under stress. The instructions, when executed by a computer, cause the computer to calculate a cardiac parameter value at a specific heart location and stress level based on heart data. It then displays this parameter on a viewing plane using polar coordinates: the point's distance from the center represents the parameter value, and the point's angle corresponds to the heart location's angle in a cylindrical coordinate system. The instructions include receiving the heart function data from a data storage device or user input and storing the data.
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July 23, 2007
June 11, 2013
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